synonymouse Wrote:
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> St. Charles line gauge is apparently 5'-2 1/2".

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Yup. Here's some verification and other interesting info from Wikipedia:

"Streetcars in New Orleans have been an integral part of the city's public transportation network since the first half of the 19th century. The longest of New Orleans' streetcar lines, the St. Charles Avenue line, is the oldest continuously operating street railway system in the world.[4] Today, the streetcars are operated by the New Orleans Regional Transit Authority (RTA)."

"In 1929, there was a widespread strike by transit workers demanding better pay, which was widely supported by much of the public. Sandwiches on baguettes were given to the "poor boys" on strike, said to be the origin of the local name of "po' boy" sandwiches. There was much rioting and animosity. Several streetcars were burned, and several people were killed. Service was gradually restored, with the strike ending in October.[23]

The same year, the last of the 4 ft 8 1⁄2 in (1,435 mm) standard gauge tracks were converted to 5 ft 2 1⁄2 in (1,588 mm) (Pennsylvania trolley gauge) to match the rest of the streetcar lines."

Google search [Streetcars in New Orleans gauge]: [www.google.com]